Window sash



R. J.' POLENZ March 17, '1942.

WINDOW SASH Filed sept. 1, 19:59

BW @MLM ATTORNEY Patented Mar. 17, 1942 UNITEDv STATES PATENT OFFICE WINDOW SASH Rudolph J. Polenz, Milwaukee, Wis.

Application September 1, 1939, Serial No. 293,067

(Cl. Il0-52) 1 Claim.

will be apparent as the description proceeds,

reference being had to the accompanying drawing, in which- Fig. 1 is a front interior view in elevation of a guillotine type window equipped with improved sash embodying the invention.

Fig. 2 is a fragmentary sectional View taken through the check rail and lower rail of the lower sash of the window.

Fig. 3 is a horizontal sectional view taken on line 3 3 of Fig. 1.

Fig. 4 is a fragmentary View in perspective of one end of the check rail and adjacent portions of the window.

Referring more particularly to the drawing,

the numeral I0 refers to the window generally,

having the inner casing II, the stool I2 and the subjoined apron I3.

The lower sash I is held in place by the interior or decorative stop I5, against the parting stop I6, and the upper sash I'I is retained slideably between the parting stop I6 and the blind stop I8. The stops I5, I and I8 are spaced from each other on the jamb I8, on whichthey are disposed vertically.

The lower sash III has the side stiles 2li and 2I and the top rail 22 and bottom rail 23. The upper sash I'I has the side styles 24 and 25, the top rail 26 and the bottom rail 2l. The top rail 22 and the bottom rail 2I are spoken of together as the check rail.

In the lower sash I4 the side styles 20 and 2I and the bottom rail 23 have an outer marginal groove 28 on their interior sides, and the styles This invention has for its object to 2li and 2I have a similar outer marginal groove 29 on their exterior sides. In the upper sash, a horizontal marginal groove is formed at the upper inner edge of the top rail 26, and the side styles 24 and 25 have vertical marginal grooves 30 and 3| on the interior and exterior faces thereof, respectively. It will be seen that the grooves underlie adjacent stop edges, or in the case of groove 23 in bottom rail 23, the said groove occurs exactly at the top outside edge of the stool I2. It will be understood that if such adjacent parts are painted, the paint in drying lwill not cause the sash to stick against' the adjacent stops or stool.

It will be understood that the invention is capable of many modifications in structure and design, without departing from the spirit of the invention, within the scope of the appended claim.

Having thus described the invention, what is claimed and desired to be secured by Letters Patent of the United States, is:

In a guillotine window, a conventional sash having a horizontal groove on a side face of one of the rails thereof, and having a vertical groove on each of the opposite side faces of each of the vertical stiles, the vertical grooves on the side faces of the stiles which correspond to the face of the rail in which the horizontal groove is formed being interconnected with the horizontal groove and all the grooves being disposed to lie at least in part outwardly beyond the adjacent edges of the window frame and being permanently exposedand in free communication with the surrounding atmosphere, so as to form visible and permanent depressed lines oi' demarcations between the exposed faces of the sash and the adjacent trim or frame of the window to p-revent formation of a paint film or deposit bridging the space between the edge of the groove farthest from the frame or trim and the adjacent face of the latter whereby paint after prepriming can be applied to the sash in closed position of the window and will be held out of contact with the frame so as to prevent sticking of the sash to the frame.

RUDOLPH J. POLENZ. 

